Ventilator.



No. 676,261. Patented June .Il, I901.

w. B; Jo nson. VENTILATUB.

' (Application filed Mar. 5, 1901.) (No Model.)

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UNITED STATES PATENT rrrcn.

WILLIAMBURGELAND JOHNSON, OF LIVERPOOL, ENGLAND.

VENTILATOR.

SPEGIFICATIONforming part of Letters Patent No. 676,261, dated June 11, 1901.

Application filed March 5, 1901. Serial No. 49,673. (No model.)

To all whom it may concern.-

Be it known that 1, WILLIAM BURGELAND JOHNSON, a subject of the King of Great Brit ain, residing at Liverpool, in the county of Lancaster, England, have invented new and usefulImprovements in Ventilators, of which the following is a specification.

The objects of the invention are to provide a Ventilator by which when open or partly open air entering a room may be deflected in any desired direction and which when closed will present a flush or level surface to the interior of the room without ledges or recesses whereon dust may collect. I attain these objects by appliances such as are illustrated in the accompanying drawing, which is a longitudinal section of a ventilator constructed according to my invention.

In the drawing, a b c d are vanes or plates fitted within an air-passage or opening e through the wallf of the room or space to be ventilated.

g represents pivots on which the vanes a b 0 can be turned in order that such vanes can be disposed either at any uniform angle or at various angles, as desired, so that air entering in the direction of the arrows may be deflected, either fanwise to diffuse it widely or in straight lines to direct it to a particular place, as desired. The pivots g are preferably fitted into pieces h, placed at each side of and movable into or out of a box 1', so that such side pieces and the vanes may be easily removed for cleaning. The side pieces 71 are connected together by a piece j. The box 11 is fitted into the opening 6 in the wall. The pivots g are preferably fitted so tight that the vanes will remain at any angle at which they may be placed, or instead of tightly-fitting pivots any convenient catch or frictional device may be used to retain the vanes at the desired angles. The vane 61 is provided at the sides with arms 7c, pivoted to the side pieces h at Z. so arranged relatively to the plane of the vane 01 that when it is desired to completely close the ventilator the vane cl can be'moved into the position shown by dotted lines 01 flush or level with the outer face. of the box 1'. The lower edge m of the vane'cl rests when closed against a vertical stop or closing piece or plate a, secured to the sides 7L and flush with the outer face of the box 2'. The vane (1 may be retained in any desired position between closed and full open by means of any usual frictional device or catch. The vanes Z) and c are cut away at the sides, so that in whatever position they may be placed free motion of the armsk will be allowed for opening or closing the ventilator by the vane d. By placing the vanes a Z) c (l in the posi tion shown by solid lines the air is diifused fanwise, and by placing them as shown by dotted lines a b c d the air is directed downward in straight lines.

The flush front of the vane 01 allows of ornamentation, so as to present a pleasing appearance when the ventilator is closed.

WVhat I claim, and desire to secure by Letters Patent, is

In a ventilator the combination with an airpassage of several independently pivoted vanes at one end thereof one of the vanes being connected to its pivots by arms,'-at least one-of the other vanes being cut away to allow motion of said arms, and a vertical stopplate for the lower edge of the armed vane substantially as described.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

WILLIAllI BU RGELAND JOHNSON.

WVitnesses:

E. OWEN, M. HARRIS.

The position of the pivot Z is Q 

